DeltaBloc® Concrete Barriers

A precast concrete barrier is poured in the safety of a batching plant and transported to site as a preassembled element. A precast concrete barrier can be deployed rapidly, minimising disruption to traffic and reducing labour costs.

The separation of the thrie-beam guardrail from the post is achieved by a release tab incorporated into the post. The tab is designed to pull forward and tear from the post and remains connected to the thrie-beam rail to ensure there is no debris from the system that may otherwise present as a danger to other motorists.

DeltaBloc® is available in standard element lengths of 6m.  At workzone sites where the barrier is required to follow a horizontal curve, shorter elements of 4m and 2m are available. 

Yes. Installations of unconnected concrete barriers cannot be considered a safety barrier system. Individual concrete barrier elements may slide or topple over during a vehicle impact creating significant risk to workers and other road users.

Sufficient clearance between the temporary concrete barrier and worksite must be provided to accommodate the expected dynamic deflection or working width of the safety barrier system.  The deflection & working width of the workzone barrier is dependent upon the speed and mass of the impacting vehicle, the angle of impact and the performance characteristics of the workzone barrier.

An anti-gawk screen is an attachment to a workzone barrier providing site security and privacy. An anti-gawk screen reduces the visibility of construction work occurring behind the workzone barrier which may be distracting to passing motorists.

Subject to the approval of the Project Manager, DeltaBloc® concrete barriers may be installed with wire mesh screens or HolyPan blockout screens.